Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4641761 | Increased strength for metal beverage closure through reforming | Tuan Nguyen | 1987-02-10 |
| 4559801 | Increased strength for metal beverage closure through reforming | Tuan Nguyen | 1985-12-24 |